/**
 * Created by dllo on 18/3/30.
 */
public class Question02 {
    public static void main(String[] args) {
        int money = 10000;
        int n = 0;
        while (money > 0) {
            money = money / 2;
            n++;
        }
        System.out.println("第" + n + "天");
    }
}
